If you are in that much of a hurry, use your knife valve and put a union above and below it. If the knife valve doesn't allow for accurate enough adjustment, you can replace it later with a better valve and you have time to find it.
Worst case is that the knife valve doesn't allow you to perfectly tune the Herbie. All that means is that you'll have a small trickle flowing down the emergency pipe. No big deal...just not perfectly silent.
__________________
400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436
|